Sydney is located in a coastal basin with the Pacific Ocean to the east and the Blue Mountains to the west. The city features the largest natural harbour in the world, Port Jackson. Besides the Sydney Harbour there are more than 70 harbour and ocean beaches, including the famous Bondi Beach and Manly Beach to name just two.
Sydney's urban area of 1687 square km is similar to that of Greater London. The metropolitan area is 12,145 square km, a significant portion of this area is national park and other unsettled land.
Sydney occupies two geographical regions, the relatively flat or rolling region, the Cumberland Plain is to the south and west of the harbour, and the Hornsby Plateau, an area north of the harbour, up to 200 metres in elevation. The oldest parts of the city are located in the flat areas, the Hornsby Plateau. This area is known as the North Shore.